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Information × Registration Number 0212U001658, 0108U010792 , R & D reports Title Thermoelectric power converters with distributed sources of heat popup.stage_title Head Anatychuk Lukyan Ivanovych, Registration Date 20-02-2012 Organization Institute of Thermoelectricity, Academy of Sciences of Ukraine and Ministry of Education and Science of Ukraine popup.description2 Report on 195 pages, 71 Fig., 3Tables, 258 sources. The scope of the research is the interrelated scalar and vector physical fields of distribution of temperatures, heat flows, electric potentials and electric current density in working mediums of classical and eddy thermocouples in the presence of distributed non-isothermal sources and heat sources. The subject of the research is the thermoelectric energy conversion in thermoelectric converters with non-isothermal distributed sources and heat sources. The objective of the project is to improve the efficiency of thermoelectric energy conversion in thermocouples using non-isothermal distributed sources and heat sources. Basic scientific and technical results. Non-equilibrium thermodynamic theory of energy conversion in thermocouples with non-steady sources and heat sources distributed in space, are developed. Classical Onsager relations for the divergent heat fluxes are specified. The possibility of maximizing the use of temperature potential of heat sources and sources is shown. Modeling and visualization algorithms of temperature and electric fields are developed. They allow us to calculate physical fields in thermocouples with an arbitrary distribution of heat sources and with arbitrary dependences of kinetic coefficients. Object-oriented computer programs on studying temperature, electrical and thermal fields of thermoelectric energy converters in which the bulk heat sources (sources) are realized by heat transfer fluid (gas or liquid) with bulk of thermocouple legs, are created. Units of computer programs to visualize the distribution of temperatures, heat flows and electric current density are developed. Element base of thermocouples (channel, planar, porous, segment, etc.) with distributed heat sources (sources), which can operate in power generation and thermoelectric cooling modes, are developed. Optimal power distributions of heat sources in permeable thermocouples based on segmented legs of Ви2те3, PbTe, PbTeGe, SiGe, FeSi2 under the conditions of maximum thermodynamic efficiency of energy conversion are determined. Optimal structural parameters and thermophysical operating conditions, which ensure maximum efficiency and specific power values when permeable, segmented, short-circuited and spirally anisotropic thermocouples are operated in power generation and cooling modes, are found. The results of computer calculations indicate the presence of a rational number of leg segments in terms of other optimal parameters at which the energy conversion efficiency will be improved by 20-40%. Model patterns of permeable thermoelectric battery for cooling gas and liquid flows are created. Experimental studies have shown the possibility of increasing coefficient of performance of thermoelectric cooling systems by 20-30%, which exceeds the best world analogues. THERMOELECTRIC ENERGY CONVERTERS, DESIGN THEORY, MATERIAL SCIENCE, COMPUTER-AIDED DESIGN, GENERATORS, COOLERS Product Description popup.authors Дем'янюк Дмитро Дмитрович Кобилянський Роман Романович Кузь Роман Васильович Мельничук Степан Васильович Михайловський віліус Ярославович Прибила Андрій Вікторович Черкез Радіон Георгійович popup.nrat_date 2020-04-02 Close